99 lines
2.1 KiB
C
99 lines
2.1 KiB
C
/* Copyright (C) 2010, 2011 Tony Garnock-Jones. All rights reserved. */
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#include <stdlib.h>
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#include <string.h>
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#include <stdio.h>
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#include <assert.h>
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#include <stdarg.h>
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/* OSSP UUID */
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#include <uuid.h>
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#include "cmsg_private.h"
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#define UUID_CHECK(context) \
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if (result != UUID_RC_OK) { \
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warn("gen_uuid failed with %d at %s\n", result, context); \
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return result; \
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}
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int gen_uuid(unsigned char *uuid_buf) {
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uuid_rc_t result;
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uuid_t *uuid;
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unsigned char temp_buf[UUID_LEN_STR + 1];
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unsigned char *temp_buf_ptr = &temp_buf[0]; /* odd API */
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size_t uuid_buf_len = UUID_LEN_STR + 1;
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assert(CMSG_UUID_BUF_SIZE == UUID_LEN_STR);
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result = uuid_create(&uuid);
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UUID_CHECK("uuid_create");
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result = uuid_make(uuid, UUID_MAKE_V4);
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UUID_CHECK("uuid_make");
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result = uuid_export(uuid, UUID_FMT_STR, &temp_buf_ptr, &uuid_buf_len);
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UUID_CHECK("uuid_export");
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assert(uuid_buf_len == (UUID_LEN_STR + 1));
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memcpy(uuid_buf, temp_buf, CMSG_UUID_BUF_SIZE);
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result = uuid_destroy(uuid);
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UUID_CHECK("uuid_destroy");
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return UUID_RC_OK;
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}
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cmsg_bytes_t cmsg_bytes_malloc_dup(cmsg_bytes_t src) {
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cmsg_bytes_t result;
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result.len = src.len;
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result.bytes = malloc(src.len);
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if (result.bytes != NULL) {
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memcpy(result.bytes, src.bytes, src.len);
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}
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return result;
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}
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cmsg_bytes_t cmsg_bytes_malloc(size_t amount) {
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cmsg_bytes_t result;
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result.len = amount;
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result.bytes = malloc(amount);
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return result;
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}
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void cmsg_bytes_free(cmsg_bytes_t bytes) {
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free(bytes.bytes);
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}
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int cmsg_bytes_cmp(cmsg_bytes_t a, cmsg_bytes_t b) {
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if (a.len < b.len) return -1;
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if (a.len > b.len) return 1;
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return memcmp(a.bytes, b.bytes, a.len);
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}
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void die(char const *format, ...) {
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va_list vl;
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va_start(vl, format);
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fprintf(stderr, "ERROR: ");
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vfprintf(stderr, format, vl);
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va_end(vl);
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exit(1);
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}
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void warn(char const *format, ...) {
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va_list vl;
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va_start(vl, format);
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fprintf(stderr, "WARNING: ");
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vfprintf(stderr, format, vl);
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va_end(vl);
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}
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void info(char const *format, ...) {
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va_list vl;
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va_start(vl, format);
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fprintf(stderr, "INFO: ");
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vfprintf(stderr, format, vl);
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va_end(vl);
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}
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